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Re: [TCML] Depotting Epoxy NST

Thanks for the advice.

Fortunately depotting the 15/30 is not a problem for me anymore.  :)
I found a 12/60 Franceformer at a shop nearby.  Even severely detuned,
my coil is making 12" sparks [pretty good considering my first coil
only gave me 1-2" with a breakout point.

On Fri, Jun 6, 2008 at 11:56 AM, David Dean <deano@xxxxxxxxxxxxxxxx> wrote:
> On Friday 06 June 2008 10:34:37 am Phillip Slawinski wrote:
>> I have a 15/30 Transco that's potted in epoxy.  I'm wondering if
>> anyone knows how to depot these, or if I'm wasting my time trying.
> In the past I have had some luck depotting small modules that were cast in
> epoxy like solid state relays etc. by using an oxyacetylene torch with a fine
> tip. The heat will decompose the epoxy into a rubbery gel like substance
> which can be cleaned away with a fine brush. If the epoxy material is harder,
> like for example Bondo brand marine fiberglass resin, the temperature
> required is too high to salvage any components.
> As far as using solvents, most common solvents will have no effect on cured
> epoxy. Those nasty enough to do the job will likely remove the insulation
> from the windings as well. There are some commercially available solvents for
> that purpose, see:
> http://www.dynaloy.com/Products/epoxy_products.html
> Unlikely that they sell to the public, and also probably very expensive.
> Good luck on your project should you decide to undertake it. If you do and
> achieve success, please post your results and procedures as this is one of
> those areas I would like to know more about.
> later
> deano
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